In this review, we will be comparing Concord and HDI-3600, two Passive Floor-standing speakers from KLH and JBL. Let's have a brief look at the main features
of KLH Concord and JBL HDI-3600 first before getting into our more
detailed comparison.
In the following sections, we will get into more detail in order to better understand how the KLH Concord and JBL HDI-3600 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both Concord and HDI-3600 are 2-way speakers.
| Driver |
KLH Concord |
JBL HDI-3600 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 6.5-inch
|
3 x 6.5-inch
|
Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer . On the other hand, the HDI-3600 features a 1" Tweeter and 3 x 6.5" Aluminum Woofer .
Frequency Response
Concord has a frequency range of 28-23k Hz whereas HDI-3600 has a frequency range of 38-30k Hz. With a minimum frequency of 28Hz, the Concord can go significantly deeper on the low side and provide stronger bass compared to the HDI-3600's min frequency of 38Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Concord is a 8 ohms speaker compared to the HDI-3600 which has a nominal impedance of 4 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the HDI-3600 can provide this impedance level.
These two speakers also have different sensitivity levels. Concord sensitivity is rated at 94 dB and the HDI-3600's is rated at 90 dB. This 4 dB difference makes the KLH Concord a more sensitive speaker compared to JBL HDI-3600, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
Concord can handle a max power of 250 watts RMS from the amp the whereas Concord has a max power handling value of watts RMS , 250 watts less than the HDI-3600.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
HDI-3600 features 5-way post posts which make bi-amping or bi-wiring possible. Concord has a 5-Way post which doesn't feature bi-amping/bi-wiring.
KLH Concord's 5-Way post terminals
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare KLH Concord's and JBL HDI-3600's external dimensions. KLH Concord has external dimensions of 1026.0 x 212.0 x 380.0mm ( 40-3/8 x 8-5/16 x 14-15/16inch) whereas JBL HDI-3600 has external dimensions of 1028.0 x 259.0 x 345.0mm ( 40-7/16 x 10-3/16 x 13-9/16inch) .
KLH Concord is 47mm narrower and 2mm shorter than JBL HDI-3600 but it is also 35mm deeper.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the KLH Concord is approximately 805.6cm2 / 124.9inch2 and base area of the JBL HDI-3600 is approximately 893.6cm2 / 138.5inch2. The Concord requires 10% less surface area than the HDI-3600 which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The KLH Concord weighs 20.45kg / 45lbs and the JBL HDI-3600 weighs 28.09kg / 61.8lbs. This makes the HDI-3600 37% heavier than the Concord.
Here is a comparison of how Concord and HDI-3600's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of KLH Concord?
Here are the items that are included inside the box of Concord:
Floorstanding loudspeakerGrille4 Spike feet (w/ locking nut attached)4 Protective discs4 Rubber feetPort plugManualATTENTION! note
What's in the Box of JBL HDI-3600?
Here are the items that come with the HDI-3600:
Floorstanding loudspeakerGrille2 Jumper-straps (pre-installed)4 Spike feetOwners Manual
 Sensitivity |
94 dB
vs
90 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
 Low Frequency Response |
28 Hz
vs
38 Hz
|
Generates deeper bass |
 Height |
1026mm
vs
1028mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
805cm2 (212x380mm)
vs
893cm2 (259x345mm)
|
Takes less floor space |
 Price per pair* |
1000USD
vs
4180USD
|
costs less (*prices may change depending on the seller, location and time) |
| Number of Woofers |
3
vs
2
|
More woofers |
 High Frequency Response |
30k Hz
vs
23k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
| General |
KLH Concord |
JBL HDI-3600 |
| Brand |
KLH |
JBL |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
up to 225 watts |
20-250 watts |
| Sensitivity |
94 dB |
90 dB |
| Impedance |
8 ohms |
4 ohms |
| Frequency Response |
28-23k Hz |
38-30k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
3 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Kevlar |
Aluminum |
| Woofer Surround Material |
Butyl Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
1026.0mm (40.4") |
1028.0mm (40.5") |
| Width |
212.0mm (8.3") |
259.0mm (10.2") |
| Depth |
380.0mm (15") |
345.0mm (13.6") |
| Weight |
20.45kg (45lbs) |
28.09kg (61.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Wood-veneer |
| Available Colors |
Black |
Grey |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
10 Years |
5 Years |
| Labor Warranty |
10 Years |
5 Years |